November 25, 2015

Homework Help: Functions

Posted by Ann on Saturday, May 17, 2008 at 9:25am.

consider the functions g(x)=(4-x^2)^0.5 and h(x)=(x^2)-5.

find the composite functions hog(x) and goh(x), if they exist, and state the domain and range of the composite functions.


ok, i have figured out that hog(x)=-1-X^2, but in my answer booklet it says that the domain of this function is -2<&=x<&=2, and the range is -5<&=y<&=-1. can someone please explain how i can get this answer??thanks

and i have no idea why the function goh(x) does not exist. help please!

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